CZ348398A3 - Circuit arrangement for detecting black level of video signal - Google Patents

Circuit arrangement for detecting black level of video signal

Info

Publication number
CZ348398A3
CZ348398A3 CZ983483A CZ348398A CZ348398A3 CZ 348398 A3 CZ348398 A3 CZ 348398A3 CZ 983483 A CZ983483 A CZ 983483A CZ 348398 A CZ348398 A CZ 348398A CZ 348398 A3 CZ348398 A3 CZ 348398A3
Authority
CZ
Czechia
Prior art keywords
video signal
circuit arrangement
black level
detecting black
detecting
Prior art date
Application number
CZ983483A
Other languages
Czech (cs)
Other versions
CZ294402B6 (en
Inventor
Masahiro Takeshima
Atsuhisa Kageyama
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of CZ348398A3 publication Critical patent/CZ348398A3/en
Publication of CZ294402B6 publication Critical patent/CZ294402B6/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Picture Signal Circuits (AREA)
CZ19983483A 1997-03-03 1998-03-02 Black level detecting circuit of video signal CZ294402B6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4752097 1997-03-03

Publications (2)

Publication Number Publication Date
CZ348398A3 true CZ348398A3 (en) 1999-02-17
CZ294402B6 CZ294402B6 (en) 2004-12-15

Family

ID=12777399

Family Applications (1)

Application Number Title Priority Date Filing Date
CZ19983483A CZ294402B6 (en) 1997-03-03 1998-03-02 Black level detecting circuit of video signal

Country Status (9)

Country Link
US (1) US5920351A (en)
EP (1) EP0914747B1 (en)
JP (1) JP4063889B2 (en)
KR (1) KR100365847B1 (en)
CN (1) CN1144474C (en)
BR (1) BR9805923A (en)
CZ (1) CZ294402B6 (en)
DE (1) DE69828855T2 (en)
WO (1) WO1998039928A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3669413B2 (en) * 1999-05-17 2005-07-06 日本電気株式会社 A mobile terminal equipped with an image display adapter and a method for coping with line quality changes
US6972866B1 (en) 2000-10-03 2005-12-06 Xerox Corporation Detecting process neutral colors
JP3844430B2 (en) * 2001-06-26 2006-11-15 三菱電機株式会社 Video signal processing apparatus and video signal processing method
JP3722740B2 (en) * 2001-11-05 2005-11-30 三菱電機株式会社 Video processing apparatus and video processing method
FR2859344B1 (en) * 2003-08-29 2006-01-27 St Microelectronics Sa DEVICE FOR GENERATING A SIGNAL FOR IMPROVING THE SHARPNESS OF A VIDEO IMAGE
JP4284538B2 (en) * 2004-10-19 2009-06-24 ソニー株式会社 Playback apparatus and playback method
CN102365676B (en) 2009-03-30 2014-04-30 Nec显示器解决方案株式会社 Video display device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976836A (en) * 1975-06-09 1976-08-24 Gte Sylvania Incorporated Automatic black level setting circuit
JPS6043981A (en) * 1983-08-22 1985-03-08 Sony Corp Beam current limiting circuit
JPH0212427A (en) * 1988-06-30 1990-01-17 Nec Corp Minimum value detecting circuit for television signal
US5410222A (en) * 1993-08-31 1995-04-25 Thomson Consumer Electronics, Inc. Sample pulse generator for automatic kinescope bias system

Also Published As

Publication number Publication date
DE69828855D1 (en) 2005-03-10
KR20000065192A (en) 2000-11-06
CN1144474C (en) 2004-03-31
KR100365847B1 (en) 2003-02-20
BR9805923A (en) 1999-08-31
EP0914747A1 (en) 1999-05-12
US5920351A (en) 1999-07-06
CN1217855A (en) 1999-05-26
JP2000513902A (en) 2000-10-17
WO1998039928A1 (en) 1998-09-11
EP0914747B1 (en) 2005-02-02
CZ294402B6 (en) 2004-12-15
DE69828855T2 (en) 2005-06-30
JP4063889B2 (en) 2008-03-19

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Legal Events

Date Code Title Description
PD00 Pending as of 2000-06-30 in czech republic
MM4A Patent lapsed due to non-payment of fee

Effective date: 20110302